package com.qf.dao;

import com.qf.bean.Student;
import com.qf.bean.Users;

import java.util.List;
import java.util.Map;

public interface UsersDao {
    public void a();
    public int insert(String name,String sex);
    //多行多列:全查+条件查询
    public List<Student> findall(String name);
    //单行多列查
    public Student findbyid(int id);
    //单行单列
    public int count();
    //聚合函数查询
    public Map getmap();
}
